The week's best photos

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Britain's Prince William, centre, The Duke of Cambridge, President of the Royal Marsden NHS (National Health Service) Foundation Trust, listens to head surgeon Pardeep Kumar, right, as he observes surgery for the removal of a bladder tumour on a male patient during a visit at the Royal Marsden hospital in London's Chelsea, Thursday, Nov. 7, 2013. (AP Photo/Lefteris Pitarakis, Pool)